Ribot introduces the goal-gradient effect as the tendency to want a goal more as one gets closer to achieving it. Ribot uses Steam's Summer Sale as an example of progress indicators and a feeling of ownership before a reward is obtained. Ribot describes the jam-jar experiment as showing that fewer options can lead to more purchases than a larger choice set. Ribot says that people judge experiences by their peaks and by how they ended. Ribot uses a Nike+ FuelBand example in which daily points and a long streak are lost after a missed target. Ribot names hedonic adaptation while describing how restricting access to pleasures can increase later enjoyment.
People
Jerome Ribot
Methods
Interaction DesignDesigning how people act with a product over time: controls, states, feedback, flows and micro-interactions. Turns goals and constraints into concrete behaviours that feel clear and forgiving, informed by perception, cognition and the physical or digital context of use.
Usability TestingUsability testing reveals where people struggle while attempting realistic tasks with a prototype or service. In a moderated session, a researcher observes the participant and may ask them to explain their thinking. Use it to investigate confusing language, layouts or interactions and identify improvements. Agree research questions, recruit likely users and prepare believable tasks that do not reveal the solution. Explain that the service is being tested, then mostly watch and listen rather than guiding participants. Record observations and follow up on unclear behaviour. Plan accessible sessions, including participants’ own assistive technology when appropriate.